WillC said:The leaves may be reacting to some damage done to the roots during repotting. The plant may also be reacting to some possible cold or chilling damage done during its care ride.
Finally, I would note that it's getting too much sunlight in that location. It does like very bright but INDIRECT sunlight and that means it is definitely getting too much light exposure on sunny afternoons. A north-facing window would be better. Otherwise, move it back from or off to the side of the window it is now in.
WillC said:Soft watery leaves can be caused by exposure to cold or by damaged roots. Root damage most often occurs either during repotting, especially if some of the original soil was removed and/or by subsequent overwatering.
Can you post a photo that show how it is potted?
WillC said:Let's hope it is just residual damage done to the roots when the store repotted it. Be careful not to overwater it by allowing the top inch of soil to get dry to your touch before you water.